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Preparation method of carbon nano cage

A carbon nano-cage and the technology of the second step are applied in the field of preparation in the field of nanotechnology, can solve the problems such as not being obtained, and achieve the effects of easy self-assembly, low preparation cost, and improved conversion rate and fluidity.

Inactive Publication Date: 2009-11-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above method, including the carbon nanocages disclosed in U.S. Patent No. 6063243, Chinese Patent No. 1454839A, and German Patent No. 19740389, they are all spherical nanomaterials, and no carbon nanocages of other shapes are obtained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Step 1, heating copper acetate at 100°C for 40 minutes, then cooling, copper acetate becomes fine powder;

[0016] Step 2, put the copper acetate powder into the funnel and place it on the top of the upright quartz glass tube; the temperature of the quartz glass tube is 900°C, and the mixed gas is introduced, the flow rate of acetylene is 20ml / min, and the flow rate of argon gas is 60l / min. h; open the valve of the funnel, make the copper acetate powder pass through the quartz glass tube from top to bottom, react, and collect the product; introduce the reaction product into a 1.2g / ml nitric acid solution, ultrasonically vibrate for 3 hours, and then heat until the solution boils , supplemented by magnetic stirring during the heating process; finally the purified product, that is, carbon nanocages, is obtained.

[0017] The carbon nanocage obtained in this embodiment is a regular cube with a side length of about 280 nanometers and a wall thickness of the carbon nanocage ...

Embodiment 2

[0019] Step 1, heating copper acetate at 140°C for 20 minutes, then cooling, copper acetate becomes fine powder;

[0020] Step 2: Put the copper acetate powder into the funnel and place it on the top of the upright quartz glass tube; the temperature of the quartz glass tube is 600°C, and the mixed gas is introduced, the flow rate of acetylene is 80ml / min, and the flow rate of nitrogen gas is 20l / h ; Open the valve of the funnel, make the copper acetate powder pass through the quartz glass tube from top to bottom, react, and collect the product; The reaction product is introduced into the nitric acid solution of 1.2g / ml, ultrasonic vibration 3 hours, then heated to solution boiling, The heating process is assisted by magnetic stirring; finally the purified product, namely carbon nanocages, is obtained.

[0021] The carbon nanocage obtained in this embodiment is a regular cube with a side length of about 30 nanometers and a wall thickness of the carbon nanocage of about 3 nanome...

Embodiment 3

[0023] Step 1, heating copper acetate at 120°C for 30 minutes, then cooling, copper acetate becomes fine powder;

[0024] Step 2, put the copper acetate powder into the funnel and place it on the top of the upright quartz glass tube; the temperature of the quartz glass tube is 750°C, and the mixed gas is introduced, the flow rate of acetylene is 50ml / min, and the flow rate of argon gas is 40l / min h; open the valve of the funnel, make the copper acetate powder pass through the quartz glass tube from top to bottom, react, and collect the product; introduce the reaction product into a 1.2g / ml nitric acid solution, ultrasonically vibrate for 3 hours, and then heat until the solution boils , supplemented by magnetic stirring during the heating process; finally the purified product, that is, carbon nanocages, is obtained.

[0025] The carbon nanocage obtained in this embodiment is a regular cube with a side length of about 200 nanometers and a wall thickness of the carbon nanocage o...

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Abstract

The invention provides a preparation method of carbon nano cage belonging to the field of nano technique, which includes the following steps: the steps one, heating copper acetate; the steps two, infusing the mixture gas and copper acetate into the environment at 600-900 DEG C, reacting, collecting product, purifying and obtaining carbon nano cage; the mixture is composed of acetylene and indifferent gas, and the flow quantity of acetylene is 20-80 ml / min. The carbon nano cage with a well-regulated external shape provided by the invention, compared with nano cages of other shapes, is easy to realize self-assembly and large-scale production with very low preparation cost.

Description

technical field [0001] The invention relates to a preparation method in the field of nanotechnology, in particular to a preparation method of carbon nano cages. Background technique [0002] Like carbon nanotubes and diamonds, carbon nanocages are thermodynamically unstable but kinetically stable metastable substances of carbon. Carbon nanocages are composed of multi-layer graphite layers, with a pore size between 2 and 100 nm, a surface structure similar to porous carbon, and a large specific surface area. The unique structure of carbon nanocages determines their rich and colorful physical and chemical properties. At present, as a new type of low-dimensional nano-functional material, it shows great application prospects in the fields of superconductivity, semiconductor, catalyst, biology, and medicine. [0003] So far, many related methods for preparing carbon nanocages have been reported, among which the more common methods are: (1) carbon evaporation method, such as arc...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B3/00
Inventor 万见峰王健农
Owner SHANGHAI JIAO TONG UNIV
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